On Wed, May 25, 2011 at 11:18 PM, James <wireless@tampabay.rr.com> wrote:

> Jeremy McSpadden <deface <at> uberpenguin.net> writes:
>
>
> > Make sure your client is set to auth before sending. Simple fix.
>
> Been down that road can had conversations with ISP admins.
> That's not the issue. The same email address works, if
> I cut and past it into the "To" field of thunderbird.
> All other email address work just fine from thunderbird.
>
>
Yes the auth message is bogus because you dont use different SMTP servers
per email message, and the auth message is only being triggered on a
particular message. Other messages work fine (- did i get that right James?)

As a troubleshooting step - have you tried a new profile? IIRC the windows
version has a profile manager, if the linux version doesnt have the same
then just move the .thunderbird directory so it will re-create it with
defaults when you launch it again.

I'm not at my linux machine now, so the details may be a bit off.